Though they are usually responsible, these sergeants major created their own hell in Arizona when they donned gas masks and ...

Bulletproof glass and B6-rated armor provide significant protection against potential threats. Two military-grade gas masks ...

"If they're freaking out, we have them look at us and breathe. If we have to, we pull them out of the gas chamber and let them take their mask off and get a few more breathes before we send them ...